EP1658828A1 - Lentille intraoculaire - Google Patents

Lentille intraoculaire Download PDF

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Publication number
EP1658828A1
EP1658828A1 EP05020631A EP05020631A EP1658828A1 EP 1658828 A1 EP1658828 A1 EP 1658828A1 EP 05020631 A EP05020631 A EP 05020631A EP 05020631 A EP05020631 A EP 05020631A EP 1658828 A1 EP1658828 A1 EP 1658828A1
Authority
EP
European Patent Office
Prior art keywords
haptic
lens
compression
stage
compressed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05020631A
Other languages
German (de)
English (en)
Inventor
Peter Toop
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rayner Intraocular Lenses Ltd
Original Assignee
Rayner Intraocular Lenses Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10833025&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1658828(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Rayner Intraocular Lenses Ltd filed Critical Rayner Intraocular Lenses Ltd
Publication of EP1658828A1 publication Critical patent/EP1658828A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/14—Eye parts, e.g. lenses or corneal implants; Artificial eyes
    • A61F2/16—Intraocular lenses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/14—Eye parts, e.g. lenses or corneal implants; Artificial eyes
    • A61F2/16—Intraocular lenses
    • A61F2002/1681—Intraocular lenses having supporting structure for lens, e.g. haptics

Definitions

  • This invention relates to a intraocular lens.
  • a typical intraocular lens comprises an optic and two opposed haptics.
  • the haptics should maintain the optic centrally in the capsular sac, they should not be so springy as to damage the sac after insertion, in a folded state.
  • Another important factor determining the form of suitable haptics is that they should be designed to resist excessive asymmetrical capsular contraction, while maintaining the optical performance of the lens, by preventing dislocation caused by buckling or twisting of the haptic or "haptic failure". While sufficient resistance can be provided by using rigid material, such a material is usually incompatible with the need to fold the lens, for insertion into the capsular sac following a small surgical incision.
  • WO-A-9741805 describes an intraocular implant comprising a substantially circular optic and two curved haptic loops. The distal end of each haptic rests on the internal wall of the eye.
  • the optic and haptics are made of the same flexible material. This material has an elastic modulus of between 0.25 and 1 MPa.
  • the width of each haptic decreases from its proximal end to its distal end, such that the ratio between the bending moment variation and the inertia moment variation at different points on the haptic is substantially constant. In a preferred embodiment, this is achieved by providing an aperture in each haptic; the width of the aperture generally decreases towards the distal end of the haptic.
  • the or each haptic in an intraocular lens comprising an optic and one or more curved haptics which can be compressed in the plane of the lens, to provide a lens that is essentially resistant to haptic failure, the or each haptic is shaped such that there are at least two stages of compression. In the first stage, the proximal part of the or each haptic can be fully compressed. In the second stage of compression, the distal part can be compressed further.
  • the haptic can be bent inwards with respect to a fulcrum defined by its point of attachment to the optic, a different fulcrum is established for the second stage. This may be the result of the haptic's interference with itself, or interference with the optic. There may be more than two stages of compression, and the number may be such that the effect is continuous, i.e. as in a rolling action where the degree of compression is related to distance from the haptic's point of attachment to the optic.
  • An intraocular lens according to the present invention is such that its overall size can be reduced by compression against a spring-like resistance of the haptic, sufficient to maintain centration in the capsule. Following the second or a further stage of compression, when the distal end of the haptic is in contact with the lens body, the lens is deformed (in profile) to a shape that is highly resistant to twisting or buckling.
  • the intraocular lens according to the present invention comprises two opposed, curved haptics.
  • the lens is deformed to a circular, oval or elliptical shape.
  • the intraocular lens shown in Fig. 1 comprises a generally circular optic 1 having convex faces 2a and 2b.
  • the lens also comprises haptics 3a and 3b each joined to the optic.
  • Each haptic includes an aperture 4a, 4b.
  • FIG. 1a shows dimensions A and B at the joining; typically, A > B.
  • each aperture is of substantially constant width.
  • a more important characteristic of each aperture is its overall shape, including opposed points 5 and 6 which, as described below, can be brought into contact, and effectively define not only a bend in the aperture but also the boundary between proximal and distal parts of the haptic.
  • the haptic is liable to buckle along the line B of Fig. 1.
  • the shape of the haptic and aperture according to the present invention minimise the likelihood of this occurrence.
  • Figs. 3 and 4 each show the essentially elliptical form (8a and 8b) of the lens shown in Fig. 1, when partially and fully compressed, respectively.
  • Fig. 3 shows that initial compression of the haptic leads to abutment of opposite walls of the aperture, bringing points 5 and 6 into contact and thereby defining a proximal part that is fully compressed and a distal part that can undergo further compression.
  • further compression brings the distal end of the haptic substantially into contact with the periphery of the optic, to give an essentially elliptical shape, in plan.
  • This design allows the overall size of the intraocular lens to be reduced, by the spring-like resistance of the haptic, sufficient to maintain centration in the capsule.
  • initial contraction may be to dimensions of 10 mm x 8 mm (see Fig. 3). Further contraction gives dimensions of 9.5 mm x 7.5 mm (see Fig. 4).
  • the thickness of the or each haptic may be greater than that of conventional lenses.
  • haptics of conventional lenses may be 0.3 mm thick.
  • the or each haptic in the present invention may be at least 0.6 mm thick.
  • Such thicker haptics may help to reduce or avoid damage to the lens when it is inserted using a typical lens applicator.
  • Thicker haptics may also advantageously separate anterior and posterior capsule surfaces, which can reduce migration and proliferation of lens epithelial cells from the anterior capsule surface onto the posterior capsule surface.

Landscapes

  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)
EP05020631A 1998-06-01 1999-06-01 Lentille intraoculaire Withdrawn EP1658828A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9811746.8A GB9811746D0 (en) 1998-06-01 1998-06-01 Intraocular lens
EP19990304229 EP0962196B1 (fr) 1998-06-01 1999-06-01 Lentille intraoculaire

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP19990304229 Division EP0962196B1 (fr) 1998-06-01 1999-06-01 Lentille intraoculaire

Publications (1)

Publication Number Publication Date
EP1658828A1 true EP1658828A1 (fr) 2006-05-24

Family

ID=10833025

Family Applications (2)

Application Number Title Priority Date Filing Date
EP19990304229 Revoked EP0962196B1 (fr) 1998-06-01 1999-06-01 Lentille intraoculaire
EP05020631A Withdrawn EP1658828A1 (fr) 1998-06-01 1999-06-01 Lentille intraoculaire

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP19990304229 Revoked EP0962196B1 (fr) 1998-06-01 1999-06-01 Lentille intraoculaire

Country Status (4)

Country Link
EP (2) EP0962196B1 (fr)
DE (2) DE99304229T1 (fr)
ES (1) ES2226612T3 (fr)
GB (1) GB9811746D0 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10159562B2 (en) 2014-09-22 2018-12-25 Kevin J. Cady Intraocular pseudophakic contact lenses and related systems and methods
US10299910B2 (en) 2014-09-22 2019-05-28 Kevin J. Cady Intraocular pseudophakic contact lens with mechanism for securing by anterior leaflet of capsular wall and related system and method
US10945832B2 (en) 2014-09-22 2021-03-16 Onpoint Vision, Inc. Intraocular pseudophakic contact lens with mechanism for securing by anterior leaflet of capsular wall and related system and method
US11109957B2 (en) 2014-09-22 2021-09-07 Onpoint Vision, Inc. Intraocular pseudophakic contact lens with mechanism for securing by anterior leaflet of capsular wall and related system and method
US11938018B2 (en) 2014-09-22 2024-03-26 Onpoint Vision, Inc. Intraocular pseudophakic contact lens (IOPCL) for treating age-related macular degeneration (AMD) or other eye disorders
US12447007B2 (en) 2014-09-22 2025-10-21 Onpoint Vision, Inc. Intraocular pseudophakic contact lens with mechanism for securing by anterior leaflet of capsular wall and related system and method

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020072796A1 (en) * 2000-12-11 2002-06-13 Hoffmann Laurent G. Iris fixated intraocular lenses
DE10202679A1 (de) * 2002-01-23 2003-08-07 Human Optics Ag Intraokularlinse
GB0217606D0 (en) 2002-07-30 2002-09-11 Rayner Intraocular Lenses Ltd Intraocular lens
US20050033421A1 (en) * 2003-07-31 2005-02-10 Peter Toop Intraocular lens

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0215468A2 (fr) * 1985-09-14 1987-03-25 Fromberg, Gunther, Dr. Lentille artificielle pour implantation dans l'oeil
WO1987001931A1 (fr) * 1985-10-01 1987-04-09 Tillay Michael J Lentille intra-oculaire et son procede d'utilisation
US4787904A (en) * 1984-07-06 1988-11-29 Severin Sanford L Hydrophillic intraocular lens
US5133749A (en) * 1991-05-13 1992-07-28 Nordan Lee T Centrating haptics
EP0766952A2 (fr) * 1995-10-06 1997-04-09 Rayner Intraocular Lenses Limited Lentilles intraoculaires
WO1997020523A1 (fr) * 1995-12-06 1997-06-12 Alcon Laboratories, Inc. Lentille intraocullaire pliable monobloc amelioree
WO1997041805A1 (fr) * 1996-05-03 1997-11-13 Corneal Laboratoires Implant intraoculaire monobloc souple

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4787904A (en) * 1984-07-06 1988-11-29 Severin Sanford L Hydrophillic intraocular lens
EP0215468A2 (fr) * 1985-09-14 1987-03-25 Fromberg, Gunther, Dr. Lentille artificielle pour implantation dans l'oeil
WO1987001931A1 (fr) * 1985-10-01 1987-04-09 Tillay Michael J Lentille intra-oculaire et son procede d'utilisation
US5133749A (en) * 1991-05-13 1992-07-28 Nordan Lee T Centrating haptics
EP0766952A2 (fr) * 1995-10-06 1997-04-09 Rayner Intraocular Lenses Limited Lentilles intraoculaires
WO1997020523A1 (fr) * 1995-12-06 1997-06-12 Alcon Laboratories, Inc. Lentille intraocullaire pliable monobloc amelioree
WO1997041805A1 (fr) * 1996-05-03 1997-11-13 Corneal Laboratoires Implant intraoculaire monobloc souple

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10159562B2 (en) 2014-09-22 2018-12-25 Kevin J. Cady Intraocular pseudophakic contact lenses and related systems and methods
US10299910B2 (en) 2014-09-22 2019-05-28 Kevin J. Cady Intraocular pseudophakic contact lens with mechanism for securing by anterior leaflet of capsular wall and related system and method
US10842614B2 (en) 2014-09-22 2020-11-24 Onpoint Vision, Inc. Intraocular pseudophakic contact lenses and related systems and methods
US10945832B2 (en) 2014-09-22 2021-03-16 Onpoint Vision, Inc. Intraocular pseudophakic contact lens with mechanism for securing by anterior leaflet of capsular wall and related system and method
US11109957B2 (en) 2014-09-22 2021-09-07 Onpoint Vision, Inc. Intraocular pseudophakic contact lens with mechanism for securing by anterior leaflet of capsular wall and related system and method
US11432921B2 (en) 2014-09-22 2022-09-06 Onpoint Vision, Inc. Intraocular pseudophakic contact lenses and related systems and methods
US11571293B2 (en) 2014-09-22 2023-02-07 Onpoint Vision, Inc. Intraocular pseudophakic contact lens with mechanism for securing by anterior leaflet of capsular wall and related system and method
US11583386B2 (en) 2014-09-22 2023-02-21 Onpoint Vision, Inc. Intraocular pseudophakic contact lens with mechanism for securing by anterior leaflet of capsular wall and related system and method
US11903818B2 (en) 2014-09-22 2024-02-20 Onpoint Vision, Inc. Intraocular pseudophakic contact lenses and related systems and methods
US11938018B2 (en) 2014-09-22 2024-03-26 Onpoint Vision, Inc. Intraocular pseudophakic contact lens (IOPCL) for treating age-related macular degeneration (AMD) or other eye disorders
US12447007B2 (en) 2014-09-22 2025-10-21 Onpoint Vision, Inc. Intraocular pseudophakic contact lens with mechanism for securing by anterior leaflet of capsular wall and related system and method

Also Published As

Publication number Publication date
ES2226612T1 (es) 2005-04-01
DE69927428T2 (de) 2006-06-14
GB9811746D0 (en) 1998-07-29
DE99304229T1 (de) 2005-03-31
EP0962196B1 (fr) 2005-09-28
EP0962196A1 (fr) 1999-12-08
ES2226612T3 (es) 2006-02-16
DE69927428D1 (de) 2005-11-03

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